EMMA ALBERICI, PRESENTER: Celebrations marking the Queen's Diamond Jubilee are continuing after the soggy but successful river pageant involving thousands boats and a royal barge. In a few hours' time the royal concert will be held in front of Buckingham Palace, where already, crowds are gathering for a look at their favourite artist and of course the Queen.

Europe correspondent Philip Williams is there and has just filed this report.

PHILIP WILLIAMS, REPORTER: Well, behind the barrier is Buckingham Palace and the stage for the concert which will be on in a few hours' time. Already, many thousands of people have gathered here, hoping to get a glimpse, more importantly, a sound, of what the concert's going to be like. Can I ask you just what - you've been here waiting for quite some time, haven't you?

YOUNG LADY: Yeah, yeah.

PHILIP WILLIAMS: Who are you waiting for? What's the most exciting bit?

YOUNG LADY: Jessie J.

PHILIP WILLIAMS: Jessie J. And what about you? Who are you looking - who are you interested in?

WOMAN: Surprisingly or not, Ed Sheeran. Ed Sheeran, absolutely. He's got such a fantastic voice. It's so pure. Just him and the guitar, fantastic.

PHILIP WILLIAMS: And of course there is one lady that you're all here for of course, isn't there?

WOMAN: The Queen? Absolutely

PHILIP WILLIAMS: How important is this in terms of your celebration of her special occasion?

WOMAN: For me personally, obviously because I'm very old, I will never, ever have this chance or opportunity again to celebrate a diamond anniversary of any king or queen.

PHILIP WILLIAMS: Well let's hope it goes well and that we don't get so much rain. What about you, sir? You've been waiting a long time too.

MAN: Yeah, exactly.

PHILIP WILLIAMS: What for you is the most important part of all of this?

MAN: Actually the (inaudible) is very awesome. And you see the peoples, all of them want to celebrate on this day, especially the Queen. And this Diamond Jubilee.

PHILIP WILLIAMS: Well I'm sure the Queen will be there, Prince Philip will be there for what is the second leg of the Diamond Jubilee. Everyone here of course, huge anticipation, huge excitement as this Jubilee four-day weekend continues.